CN102621514B - Electronic transformer verifying device - Google Patents
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Abstract
一种电子式互感器校验装置，涉及一种电子式互感器校验装置。为了解决传统的互感器校验装置缺乏相应的数字接口而不能对电子式互感器进行校验的问题。本发明包括：标准电子式互感器组、标准合并单元、信号调理箱、工业计算机、合并单元接口、模拟量输入接口和光脉冲扩展接口。所述的信号调理箱包括：1号光纤收发器、2号光纤收发器、过压保护电路、数据采集卡和光脉冲扩展电路；所述的工业计算机配置有1号电以太网口、2号电以太网口和PCI总线接口；所述的标准电子式互感器组，根据应用场合的不同，可以只有单台标准电子式互感器，也可以由多台标准电子式互感器组成。本发明应用于电力系统用的互感器校验领域。
An electronic transformer calibration device relates to an electronic transformer calibration device. In order to solve the problem that the traditional transformer calibration device lacks the corresponding digital interface and cannot calibrate the electronic transformer. The invention includes: a standard electronic transformer group, a standard merging unit, a signal conditioning box, an industrial computer, an interface of the merging unit, an analog input interface and an optical pulse expansion interface. The signal conditioning box includes: No. 1 optical fiber transceiver, No. 2 optical fiber transceiver, overvoltage protection circuit, data acquisition card and optical pulse expansion circuit; the industrial computer is equipped with No. 1 electrical Ethernet port, No. 2 electrical Ethernet port and PCI bus interface; the standard electronic transformer group, according to different application occasions, may only have a single standard electronic transformer, or may be composed of multiple standard electronic transformers. The invention is applied to the field of transformer calibration for power systems.
Description
Technical field
The present invention relates to power equipment test field, be specifically related to a kind of electronic transformer calibrator.
Background technology
Traditional mutual-inductor calibration device is comprised of standard mutual inductor, tested mutual inductor and mutual-inductor tester.Wherein, mutual-inductor tester generally all adopts electrician's formula error of measurement principle, and tested mutual inductor and standard mutual inductor are connected into difference loop, utilizes difference-measuring instrument to obtain ratio error and the phase error of tested mutual inductor.
Along with the progress of technology, the electronic mutual inductor of new generation take optical transformer as representative is just progressively put on market.According to the regulation of standard GB/T/T 20847.7 electronic type voltage transformers and GB/T 20847.8 electronic current mutual inductors, the secondary output of electronic mutual inductor is different from the secondary output of traditional mutual inductor, can be divided into two kinds of analog output and digital outputs.For want of corresponding digital interface and can not carry out verification to electronic mutual inductor of tradition mutual-inductor tester.And the analog output of electronic mutual inductor neither be exported in traditional simulation, its output capacity is little more many than tradition output.The rated secondary voltage standard value of conventional voltage mutual inductor be 100V,
the rated secondary current standard value of conventional current mutual inductor is 5A, 1A, and the specified secondary standard value of electronic type voltage transformer of simulation output be 1.625V, 2V, 3.25V, 4V, 6.5V or
the specified secondary standard value of electronic current mutual inductor of analog output is 22.5mV, 150mV, 200mV, 225mV, 4V.
In addition, electronic mutual inductor is also easily subject to the impact of adjacent phase mutual inductor in actual motion, thereby affect the measurement performance of electronic mutual inductor, thereby be necessary to simulate actual ruuning situation three-phase electronic mutual inductor is detected simultaneously, to investigate the antijamming capability of electronic mutual inductor.
Summary of the invention
The present invention is in order to solve that traditional mutual-inductor calibration device lacks corresponding digital interface and the problem that can not carry out to electronic mutual inductor verification.
A kind of electronic transformer calibrator of the present invention, this calibration equipment comprises: standard electric minor mutual inductor group, standard merge cells, signal process box, industrial computer, optical fiber transceiving interface, analog input interface and the light pulse expansion interface of output digital quantity signal, and described signal process box comprises: No. 1 fiber optical transceiver, No. 2 fiber optical transceivers, overvoltage crowbar, data collecting card and light pulse expanded circuits; Described data collecting card comprises: A/D modular converter and synchronizing pulse sending module; Described industrial computer disposes No. 1 electric Ethernet interface, No. 2 electric Ethernet interfaces and pci bus interface, the optical fiber serial data that the standard electric minor mutual inductor group of output digital quantity signal is sent is sent to standard merge cells by optical fiber, standard merge cells carries out the data that receive by optical fiber, to be sent to after framing the optical interface of No. 1 fiber optical transceiver according to IEC 61850 agreements, No. 1 fiber optical transceiver converts light signal to No. 1 electric Ethernet interface sending into industrial computer after electric signal by netting twine;
Optical fiber transceiving interface carries out according to IEC 61850 agreements the data that receive be sent to after framing the optical interface of No. 2 fiber optical transceivers, and No. 2 fiber optical transceivers convert light signal to No. 2 electric Ethernet interfaces sending into industrial computer after electric signal by netting twine;
Analog input interface inputs to the analog signals receiving the input end of the overvoltage crowbar of signal process box, the output terminal of overvoltage crowbar is connected with the input end of analog signal of the A/D modular converter in data collecting card, and the pci bus of data collecting card is connected with the pci bus interface of industrial computer by shielded cable;
Industrial computer is by the image data of pci bus interface image data capture card output, this industrial computer also sends the synchronizing pulse sending module of electric pulse synchronizing signal to data collecting card by pci bus interface, synchronizing pulse sending module is sent electric pulse synchronizing signal into the synchronous triggering signal input end of A/D modular converter and the synchronous triggering signal input end of light pulse expanded circuit simultaneously, light pulse expanded circuit is extended to two-way optical pulse synchronization signal syn by the synchronous triggering signal receiving, and this two-way optical pulse synchronization signal syn is sent to the synchronous signal input end of standard merge cells and the optical synchronous signal input end of light pulse expansion interface by optical fiber respectively.
A kind of electronic transformer calibrator of the present invention is in application, by optical fiber transceiving interface with by school merge cells, be connected, by analog input interface, export being connected by school electronic mutual inductor group of analog signals with outside, realize the check to electronic mutual inductor.
Electronic transformer calibrator of the present invention compared with prior art, has following feature and advantage:
1, the present invention can meet the verification requirement of the electronic mutual inductor of analog output and digital output, and uncertainty of measurement level is better than 0.05%.
2, the present invention can detect many electronic mutual inductors simultaneously, can not only improve the efficiency of testing, can also carry out detecting and assessing to the consistance of electronic mutual inductor and antijamming capability.
3, the present invention has set up the standard electric minor mutual inductor of the digital output that meets IEC61850 communications protocol, can also be used to be combined unit and carries out performance test and evaluation.
The invention provides a kind of electronic transformer calibrator and this device that can meet the requirement of electronic mutual inductor Performance Detection, realization is combined the method for testing of unit performance, not only can carry out error checking to the electronic mutual inductor of digital output and analog output, but also can detect the consistance of the electronic mutual inductor of many same models and antijamming capability.
Accompanying drawing explanation
Fig. 1 is the one-piece construction figure of electronic transformer calibrator of the present invention; Fig. 2 is the electrical equipment principle schematic of standard electric minor mutual inductor of the present invention; Fig. 3 is the electrical equipment principle schematic of data acquisition unit 1-3 of the present invention; Fig. 4 is the wiring schematic diagram of merge cells of the present invention when test; Fig. 5 is the wiring schematic diagram during simultaneously to the test of 3 electronic mutual inductors of the present invention.
Embodiment
Embodiment one, in conjunction with Fig. 1, illustrate present embodiment, a kind of electronic transformer calibrator described in present embodiment, this calibration equipment comprises: standard electric minor mutual inductor group 1, standard merge cells 2, signal process box 3, industrial computer 4, optical fiber transceiving interface 5, analog input interface 6 and the light pulse expansion interface 7 of output digital quantity signal, and described signal process box 3 comprises: No. 1 fiber optical transceiver 3-1, No. 2 fiber optical transceiver 3-2, overvoltage crowbar 3-3, data collecting card 3-4 and light pulse expanded circuit 3-5; Described data collecting card 3-4 comprises: A/D modular converter 3-4-1 and synchronizing pulse sending module 3-4-2; Described industrial computer 4 disposes No. 1 electric Ethernet interface 4-1, No. 2 electric Ethernet interface 4-2 and pci bus interface 4-3, the optical fiber serial data that the standard electric minor mutual inductor group 1 of output digital quantity signal is sent is sent to standard merge cells 2 by optical fiber, standard merge cells 2 carries out the data that receive by optical fiber, to be sent to after framing the optical interface of No. 1 fiber optical transceiver 3-1 according to IEC 61850 agreements, No. 1 fiber optical transceiver 3-1 converts light signal to No. 1 electric Ethernet interface 4-1 that sends into industrial computer 4 after electric signal by netting twine;
The standard channel of calibration equipment is comprised of 2, No. 1 fiber optical transceiver 3-1 of standard electric minor mutual inductor group 1, standard merge cells and No. 1 electric Ethernet interface 4-1 that export digital quantity signal.The optical fiber serial data that the standard electric minor mutual inductor group 1 of output digital quantity signal is sent is sent to standard merge cells 2 by optical fiber, standard merge cells 2 carries out the data that receive by optical fiber, to be sent to after framing the optical interface of No. 1 fiber optical transceiver 3-1 according to IEC 61850 agreements, No. 1 fiber optical transceiver 3-1 converts light signal to No. 1 electric Ethernet interface 4-1 that sends into industrial computer 4 after electric signal by netting twine;
The electronic mutual inductor of calibration equipment digital output by school passage by: 5, No. 2 fiber optical transceiver 3-2 of optical fiber transceiving interface and No. 2 electric Ethernet interface 4-2 form.Output digital quantity signal by the digital output end of school electronic mutual inductor group with by the digital quantity input end of school merge cells, be connected, by the optical interface that passes through optical fiber transceiving interface 5 data are carried out being sent to after framing according to IEC 61850 agreements No. 2 fiber optical transceiver 3-2 of school merge cells, No. 2 fiber optical transceiver 3-2 convert light signal to No. 2 electric Ethernet interface 4-2 that send into industrial computer 4 after electric signal by netting twine;
Being formed by analog input interface 6, overvoltage crowbar 3-3, data collecting card 3-4 and pci bus interface 4-3 by school passage of the electronic mutual inductor of calibration equipment analog output.The input end that by analog input interface 6, analog signals is inputed to the overvoltage crowbar 3-3 of signal process box 3 by school electronic mutual inductor group of output analog signals, the output terminal of overvoltage crowbar 3-3 is connected with the input end of analog signal of the A/D modular converter 3-4-1 in data collecting card 3-4, and the pci bus of data collecting card 3-4 is connected with the pci bus interface 4-3 of industrial computer 4 by shielded cable;
The synchronous generation passage of calibration equipment is comprised of pci bus interface 4-3, data collecting card 3-4, light pulse expanded circuit 3-5, standard merge cells 2 and light pulse expansion interface 7.Industrial computer 4 is by the image data of pci bus interface 4-3 image data capture card 3-4 output, this industrial computer 4 also sends the synchronizing pulse sending module 3-4-2 of electric pulse synchronizing signal to data collecting card 3-4 by pci bus interface 4-3, synchronizing pulse sending module 3-4-2 sends electric pulse synchronizing signal into the synchronous triggering signal input end of A/D modular converter 3-4-1 and the synchronous triggering signal input end of light pulse expanded circuit 3-5 simultaneously, light pulse expanded circuit 3-5 is extended to two-way optical pulse synchronization signal syn by the synchronous triggering signal receiving, and this two-way optical pulse synchronization signal syn is sent to the synchronous signal input end of standard merge cells 2 and the optical synchronous signal input end of light pulse expansion interface 7 by optical fiber respectively, the synchronous signal output end of light pulse expansion interface 7 with by the synchronous signal input end of school merge cells, be connected.
Embodiment two, in conjunction with Fig. 2, illustrate present embodiment, this embodiment is with the difference of a kind of electronic transformer calibrator described in embodiment one, the standard electric minor mutual inductor group 1 of described output digital quantity signal comprises: standard current transformer 1-1, power pack 1-2, standard potential transformer 1-4, voltage changer 1-5 and data acquisition unit 1-3
The current signal output end of standard current transformer 1-1 connects the current signal input end of power pack 1-2, and the analog current data output end of power pack 1-2 connects the analog current data input pin of data acquisition unit 1-3; The voltage signal output end of standard potential transformer 1-4 connects the voltage signal input end of voltage changer 1-5, the analog voltage data output end of voltage changer 1-5 connects the analog voltage data input pin of data acquisition unit 1-3, the data output end of data acquisition unit 1-3 connects the data input pin of standard merge cells 2, the light pulse signal input end of the light pulse signal output terminal connection data collector 1-3 of described light pulse expanded circuit 3-5.
Embodiment three, in conjunction with Fig. 3, illustrate present embodiment, the difference of this embodiment and embodiment two is, described data acquisition unit 1-3 comprises: programmable gain amplifier group 1-3-1, A/D converter group 1-3-2, data processor 1-3-3, logic controller group 1-3-4, configuration manager 1-3-5, electric Ethernet Configuration interface 1-3-6, phototiming receiving interface 1-3-7, protocol groups frame module 1-3-8, optical Ethernet transmitting-receiving interface 1-3-9 and optical fiber serial ports transmission interface 1-3-10;
The analog voltage signal of the analog current signal of power pack 1-2 and voltage changer 1-5 is sent to programmable gain amplifier group 1-3-1 simultaneously, programmable gain amplifier group 1-3-1 is sent to A/D converter group 1-3-2 after the analog current signal of reception is amplified according to its initial gain, A/D converter group 1-3-2 is sent to data processor 1-3-3 after input analog current signal is converted to digital current signal, the amplitude of the digital current signal that data processor 1-3-3 obtains according to input digital current calculated signals, data processor 1-3-3 is sent to logic controller group 1-3-4 by the amplitude of the digital current signal calculating, the gain of the digital current Signal Regulation programmable gain amplifier group 1-3-1 that logic controller group 1-3-4 obtains according to data processor 1-3-3, programmable gain amplifier group 1-3-1 is sent to A/D converter group 1-3-2 after the analog voltage signal of reception is amplified according to its initial gain, A/D converter group 1-3-2 is sent to data processor 1-3-3 after input analog voltage signal is converted to digital voltage signal, the amplitude of the digital voltage signal that data processor 1-3-3 calculates according to input digital voltage signal, data processor 1-3-3 is sent to logic controller group 1-3-4 by the amplitude of the digital voltage signal calculating, the digital voltage signal that logic controller group 1-3-4 obtains according to data processor 1-3-3 regulates the gain of programmable gain amplifier group 1-3-1, electricity Ethernet Configuration interface 1-3-6 connection is sent to configuration manager 1-3-5 by configuration information, light pulse expanded circuit 3-5 is connected synchronization pulse is sent to logic controller group 1-3-4 with phototiming receiving interface 1-3-7 by optical fiber, logic controller group 1-3-4 is sent to configuration manager 1-3-5 by synchronization pulse, configuration manager 1-3-5 is sent to protocol groups frame module 1-3-8 by the configuration information receiving and synchronizing information, the data that protocol groups frame module 1-3-8 sends data acquisition unit group 1-3-3 according to the synchronizing information that receives are carried out framing according to IEC 61850 agreements and by optical Ethernet, are received and dispatched interface 1-3-9 and be sent to standard merge cells 2, protocol groups frame module 1-3-8 requires to carry out framing according to the configuration information receiving according to IEC 60044-8 and by optical fiber serial ports transmission interface 1-3-10, is sent to standard merge cells 2 with FT3 form.
Data processor 1-3-3, logic controller group 1-3-4, configuration manager 1-3-5 and the protocol groups frame module 1-3-8 of described data acquisition unit 1-3 are realized by 1 FPGA and 1 dsp chip.
The method of testing that electronic transformer calibrator is combined unit performance is, the digital quantity signal that the optical Ethernet transmitting-receiving interface 1-3-9 output of the standard electric minor mutual inductor group 1 of output digital quantity signal meets IEC 61850 agreements is sent to the optical interface of No. 1 fiber optical transceiver 3-1 by optical fiber, No. 1 fiber optical transceiver 3-1 converts after electric signal light signal by No. 1 electric Ethernet interface 4-1 of netting twine access industrial computing machine 4 to; The digital quantity signal that the optical fiber serial ports transmission interface 1-3-10 output of standard electric minor mutual inductor meets the FT3 form of IEC60044-8 requirement is sent to by school merge cells by optical fiber, by school merge cells, the digital quantity signal receiving is carried out by optical fiber, being sent to after framing the optical interface of No. 2 fiber optical transceiver 3-2 according to IEC 61850 agreements, No. 2 fiber optical transceiver 3-2 convert after electric signal light signal by No. 2 electric Ethernet interface 4-2 of netting twine access industrial computing machine 4 to.
Verification principle of the present invention is:
(1) carry out the checking electronic type transformers of digital output: the data message of standard channel, through 2 and No. 1 fiber optical transceiver 3-1 of standard electric minor mutual inductor group 1, standard merge cells of output digital quantity signal, is sent into industrial computer 4 by No. 1 electric Ethernet interface 4-1; By the data message of school passage, through 5, No. 2 fiber optical transceiver 3-2 of optical fiber transceiving interface and No. 2 electric Ethernet interface 4-2, sent into industrial computer 4; The data message of standard channel and by the data message of school passage synchronously by industrial computer 4 by software control, the synchronizing pulse sending module 3-4-2 of the data collecting card 3-4 of signal process box 3 receives the software control order of industrial computer 4 and sends electric pulse synchronizing signal, light pulse expanded circuit 3-5 is extended to two-way optical pulse synchronization signal by the electric pulse synchronizing signal receiving, the phototiming input port of standard merge cells 2 is sent on one tunnel, and the phototiming input port of light pulse expansion interface 7 is sent on a road; Industrial computer 4 adopts the direct method of measurement, calculates respectively by the amplitude of school electronic mutual inductor and standard mutual inductor and phase place, thereby obtains by the control information of school electronic mutual inductor.
(2) carry out the checking electronic type transformers of analog output: the data message of standard channel, through 2 and No. 1 fiber optical transceiver 3-1 of standard electric minor mutual inductor group 1, standard merge cells of output digital quantity signal, is sent into industrial computer 4 by No. 1 electric Ethernet interface 4-1; By the analog quantity voltage signal by the output of school electronic mutual inductor group of school analog output, passed through the input end of the overvoltage crowbar 3-3 of shielded cable input signal conditioning case 3, the output terminal of overvoltage crowbar 3-3 is connected with the input end of the A/D modular converter 3-4-1 of data collecting card 3-4, and data collecting card 3-4 will be sent into industrial computer 4 by pci bus interface 4-3 by the data message of school passage by shielded cable; The data message of standard channel and by the data message of school passage synchronously by industrial computer 4 by software control, electric pulse synchronizing signal is sent in the software control order of industrial computer 4, send into the external trigger input end of A/D modular converter 3-4-1 and the input end of light pulse expanded circuit 3-5 simultaneously, light pulse expanded circuit 3-5 is extended to two-way optical pulse synchronization signal by the electric pulse synchronizing signal receiving, and sends wherein leading up to optical fiber into the phototiming input port of light pulse expansion interface 7; Industrial computer 4 adopts the direct method of measurement, calculates respectively by the amplitude of school electronic mutual inductor and standard mutual inductor and phase place, thereby obtains by the control information of school electronic mutual inductor.
(3) in conjunction with Fig. 4, illustrate and carry out merge cells performance test: the optical Ethernet transmitting-receiving interface 1-3-9 output of standard electric minor mutual inductor meets the digital quantity signal of IEC 61850 agreements, by optical fiber, be sent to the optical interface of No. 1 fiber optical transceiver 3-1, after No. 1 fiber optical transceiver 3-1 converts light signal to electric signal, pass through No. 1 electric Ethernet interface 4-1 of netting twine access industrial computing machine 4, as the data information acquisition of standard channel; The optical fiber serial ports transmission interface 1-3-10 output of standard electric minor mutual inductor meets the digital quantity signal of the FT3 form of IEC 60044-8 requirement, and be sent to optical fiber transceiving interface 5 by optical fiber, optical fiber transceiving interface 5 carries out according to IEC 61850 agreements the digital quantity signal receiving by optical fiber, be sent to after framing the optical interface of No. 2 fiber optical transceiver 3-2, No. 2 fiber optical transceiver 3-2 convert after electric signal light signal by No. 2 electric Ethernet interface 4-2 of netting twine access industrial computing machine 4 to, as by the data information acquisition of school passage; The data message of standard channel and by the data message of school passage synchronously by industrial computer 4 by software control, the synchronizing pulse sending module 3-4-2 of the data collecting card 3-4 of signal process box 3 receives the software control order of industrial computer 4 and sends electric pulse synchronizing signal, light pulse expanded circuit 3-5 is extended to two-way optical pulse synchronization signal by the electric pulse synchronizing signal receiving, the phototiming receiving interface 1-3-7 of the data acquisition unit 1-3 of standard mutual inductor group 1 is sent on one tunnel, and the phototiming input port of light pulse expansion interface 7 is sent on a road; Due to standard channel and by the data of school passage all from the digital output of the data acquisition unit 1-3 of standard electric minor mutual inductor, and there is synchronizing signal to guarantee that signal is synchronous, so calculate respectively by amplitude and the phase place of school merge cells output information and the direct output information of standard electric minor mutual inductor by industrial computer 4, can obtain by the control information of school merge cells.
(4) in conjunction with Fig. 5, illustrate many electronic mutual inductors are carried out to consistance and antijamming capability detection: to detect 3 digital output electronic current mutual inductors as example, its wiring schematic diagram as shown in Figure 5, the standard electric minor mutual inductor 1-A of the standard electric minor mutual inductor group 1 of output digital quantity signal, standard electric minor mutual inductor 1-B and standard electric minor mutual inductor 1-C respectively with output digital quantity signal by school electronic mutual inductor group A, output digital quantity signal by school electronic mutual inductor group B and output digital quantity signal by school electronic mutual inductor group C, sealed in same current return, as the standard channel of calibration equipment: standard electric minor mutual inductor 1-A, standard electric minor mutual inductor 1-B are connected with standard merge cells 2 by 3 optical fiber respectively with standard electric minor mutual inductor 1-C, standard merge cells 2 merges the data message of 3 electronic mutual inductors, by No. 1 fiber optical transceiver 3-1 and No. 1 electric Ethernet interface 4-1, sends into industrial computer 4, output digital quantity signal by school electronic mutual inductor group A, output digital quantity signal by school electronic mutual inductor group B and output digital quantity signal by school electronic mutual inductor group C respectively by 3 optical fiber with by school merge cells, be connected, by school merge cells, 3 data message merga pass optical fiber by school electronic mutual inductor are connected with the Data Input Interface of optical fiber transceiving interface 5, optical fiber transceiving interface 5 is sent into industrial computer 4 by No. 2 fiber optical transceiver 3-2 and No. 2 electric Ethernet interface 4-2, as the electronic mutual inductor of calibration equipment digital output by school passage: the data message of standard channel and by the data message of school passage synchronously by industrial computer 4 by software control, the synchronizing pulse sending module 3-4-2 of the data collecting card 3-4 of signal process box 3 receives the software control order of industrial computer 4 and sends electric pulse synchronizing signal, light pulse expanded circuit 3-5 is extended to two-way optical pulse synchronization signal by the electric pulse synchronizing signal receiving, the phototiming input port of standard merge cells 2 is sent on one tunnel, the phototiming input port of light pulse expansion interface 7 is sent on one tunnel, industrial computer 4 adopts the direct method of measurement, calculate respectively 3 by amplitude and the phase place of school electronic mutual inductor and 3 standard mutual inductors, thereby obtain 3 by the control information of school electronic mutual inductor, by the comparison to 3 error informations, analyze 3 mutual inductor consistance and antijamming capability.
The function below each several part of the present invention being realized and the concrete component parameter adopting describe:
(1) the standard electric minor mutual inductor of output digital quantity signal
Standard current transformer 1-1 adopts specified secondary to be output as the standard electromagnetic current transducer of the 0.01S level of 1A, and primary current is transformed to secondary current; Standard potential transformer 1-4 adopts specified secondary to be output as the standard electric electromagnetic type voltage transformer of 0.01 grade of 100V, and primary voltage is transformed to secondary voltage; Power pack 1-2 adopts the precision current transformer of 0.01 grade that nominal transformation ratio is 1A/10mA, and sampling resistor is 350, and temperature coefficient is 5ppm, and power pack 1-2 converts the 1A current signal of standard electromagnetic current transducer to small voltage signal; Voltage changer 1-5 adopts the accurate voltage mutual inductor of 0.01 grade that nominal transformation ratio is 100V/5V, converts the 100V voltage signal of standard electric electromagnetic type voltage transformer to small voltage signal;
The programmable gain amplifier group 1-3-1 of data acquisition unit 1-3 adopts the AD8555 chip of ADI company, programmable gain amplifier group 1-3-1 can regulate enlargement factor by program, make A/D converter group 1-3-2 full scale signal reach homogenization, greatly improve measuring accuracy; A/D converter group 1-3-2 adopts the AD7656 chip of AD company, and the chip of 16 sampling precisions of simultaneously sampling for 250kSPS six passages, completes the translation function of simulation small voltage to digital quantity signal; The function of data processor 1-3-3, logic controller group 1-3-4, configuration manager 1-3-5 and protocol groups frame module is realized by DSP and FPGA, DSP adopts the chip that the model of TI company is TMS320F2812, and FPGA adopts the chip that the model of Xilinx company is XC2S100-6PQ208I; Phototiming receiving interface 1-3-7 receives phototiming pps pulse per second signal, realizes the synchronous of sampled signal data, adopts the HFBR-2412 device of Avago company to realize; Electricity Ethernet Configuration interface 1-3-6 realizes the information configuration of data acquisition unit 1-3, and its interface adopts the RJ45 interface of standard; The data that meet IEC 61850 agreements of optical Ethernet transmitting-receiving Interface realization data acquisition unit 1-3 send, and adopt the AFBR-5803 device of Avago company to realize; The data that optical fiber transmission interface is realized the digital quantity signal of the FT3 form that meets IEC 60044-8 requirement of data acquisition unit 1-3 send, and adopt the HFBR-1414 device of Avago company to realize.
(2) standard merge cells
The merge cells that the model of the Xuji Electric Co., Ltd of the present embodiment accepted standard merge cells 2 is DMU820, receive the digital quantity signal of the FT3 form that meets IEC 60044-8 requirement of the optical fiber serial ports transmission interface 1-3-10 output of the data acquisition unit 1-3 of the accurate electronic mutual inductor of maximum 9 station symbol, and the rs 232 serial interface signal of the accurate electronic mutual inductor of many station symbols is carried out to framing according to IEC 61850 agreements, by fiber optic Ethernet mouth, externally send.
(3) signal process box
No. 1 fiber optical transceiver 3-1 and No. 2 fiber optical transceiver 3-2 realize optical Ethernet data-switching and become the function of electric Ethernet data, so that industrial computer carries out data communication, adopt the HTB-1100 type fiber optical transceiver of NetLINK company; Overvoltage overvoltage crowbar 3-3, the device of employing is TVS pipe, protected data capture card 3-4 avoids overvoltage and impacts; Light pulse expanded circuit 3-5 receives the electric impulse signal of the clock-pulse generator 3-4-2 transmission of data collecting card, convert electric impulse signal to light pulse signal, and be extended to 2 road light pulse signals outputs, for the standard channel of calibration equipment with by school passage, provide phototiming pps pulse per second signal, adopt the HFBR-1414 device of 2 Avago companies to realize.
Data collecting card 3-4 realize to analog output by the data acquisition function of school electronic mutual inductor group, adopt the PCI-6281 type M series multifunctional data collecting card of NI company, adopt pci bus and industrial computer 4 to carry out data communication, its major parameter is
1) ADC resolution: 18Bits;
2) sampling rate: 625kS/s single channel, 500kS/s hyperchannel;
3) input range: ± 10V, ± 5V, ± 2V, ± 1V, ± 0.5V, ± 0.2V, ± 0.1V, range software is optional;
4) ADC triggering mode: software triggers, hardware trigger, optional;
5) input impedance: > 10G Ω;
6) counter resolution: 32Bits;
(4) industrial computer
1) anti-electromagnetic interference (EMI): meet MIL-810F and IP54 standard;
2) internal memory: 1GB;
3) operating system:
xP Professional Service Pack 2;
4) interface: serial port, Dsub 9 pin plug X1
USB port, 4 pin X3, USB 2.0 editions
LAN port, RJ-45 jack X2 (IEEE 802.3 10Base-T, IEEE802.3u 100Base-TX, IEEE 802.3ab1000Base-T).
Claims (2)
1. an electronic transformer calibrator, it is characterized in that, this calibration equipment comprises: standard electric minor mutual inductor group (1), standard merge cells (2), signal process box (3), industrial computer (4), optical fiber transceiving interface (5), analog input interface (6) and the light pulse expansion interface (7) of output digital quantity signal, and described signal process box (3) comprising: No. 1 fiber optical transceiver (3-1), No. 2 fiber optical transceivers (3-2), overvoltage crowbar (3-3), data collecting card (3-4) and light pulse expanded circuit (3-5); Described data collecting card (3-4) comprising: A/D modular converter (3-4-1) and synchronizing pulse sending module (3-4-2); Described industrial computer (4) disposes No. 1 electric Ethernet interface (4-1), No. 2 electric Ethernet interfaces (4-2) and pci bus interface (4-3),
The optical fiber serial data that the standard electric minor mutual inductor group (1) of output digital quantity signal is sent is sent to standard merge cells (2) by optical fiber, standard merge cells (2) carries out the data that receive by optical fiber, to be sent to after framing the optical interface of No. 1 fiber optical transceiver (3-1) according to IEC61850 agreement, No. 1 fiber optical transceiver (3-1) converts light signal to No. 1 electric Ethernet interface (4-1) of sending into industrial computer (4) after electric signal by netting twine;
Optical fiber transceiving interface (5) carries out according to IEC61850 agreement the data that receive be sent to after framing the optical interface of No. 2 fiber optical transceivers (3-2), and No. 2 fiber optical transceivers (3-2) convert light signal to No. 2 electric Ethernet interfaces (4-2) of sending into industrial computer (4) after electric signal by netting twine;
Analog input interface (6) inputs to the analog signals receiving the input end of the overvoltage crowbar (3-3) of signal process box (3), the output terminal of overvoltage crowbar (3-3) is connected with the input end of analog signal of the A/D modular converter (3-4-1) of data collecting card (3-4), and the pci bus of data collecting card (3-4) is connected with the pci bus interface (4-3) of industrial computer (4) by shielded cable;
Industrial computer (4) is by the image data of pci bus interface (4-3) image data capture card (3-4) output, this industrial computer (4) also sends the synchronizing pulse sending module (3-4-2) of electric pulse synchronizing signal to data collecting card (3-4) by pci bus interface (4-3), synchronizing pulse sending module (3-4-2) is sent electric pulse synchronizing signal into the synchronous triggering signal input end of A/D modular converter (3-4-1) and the synchronous triggering signal input end of light pulse expanded circuit (3-5) simultaneously, light pulse expanded circuit (3-5) is extended to two-way optical pulse synchronization signal syn by the synchronous triggering signal receiving, and this two-way optical pulse synchronization signal syn is sent to the synchronous signal input end of standard merge cells (2) and the optical synchronous signal input end of light pulse expansion interface (7) by optical fiber respectively,
The standard electric minor mutual inductor group (1) of described output digital quantity signal comprises: standard current transformer (1-1), power pack (1-2), standard potential transformer (1-4), voltage changer (1-5) and data acquisition unit (1-3),
The current signal output end of standard current transformer (1-1) connects the current signal input end of power pack (1-2), and the analog current data output end of power pack (1-2) connects the analog current data input pin of data acquisition unit (1-3); The voltage signal output end of standard potential transformer (1-4) connects the voltage signal input end of voltage changer (1-5), the analog voltage data output end of voltage changer (1-5) connects the analog voltage data input pin of data acquisition unit (1-3), the data output end of data acquisition unit (1-3) connects the data input pin of standard merge cells (2), the light pulse signal input end of the light pulse signal output terminal connection data collector (1-3) of described light pulse expanded circuit (3-5).
2. a kind of electronic transformer calibrator according to claim 1, it is characterized in that, described data acquisition unit (1-3) comprising: programmable gain amplifier group (1-3-1), A/D converter group (1-3-2), data processor (1-3-3), logic controller group (1-3-4), configuration manager (1-3-5), electric Ethernet Configuration interface (1-3-6), phototiming receiving interface (1-3-7), protocol groups frame module (1-3-8), optical Ethernet transmitting-receiving interface (1-3-9) and optical fiber serial ports transmission interface (1-3-10);
The analog voltage signal of the analog current signal of power pack (1-2) and voltage changer (1-5) is sent to programmable gain amplifier group (1-3-1) simultaneously, programmable gain amplifier group (1-3-1) is sent to A/D converter group (1-3-2) after the analog current signal of reception is amplified according to its initial gain, A/D converter bank (1-3-2) is sent to data processor (1-3-3) after input analog current signal is converted to digital current signal, the amplitude of the digital current signal that data processor (1-3-3) obtains according to input digital current calculated signals, data processor (1-3-3) is sent to logic controller group (1-3-4) by the amplitude of the digital current signal calculating, the gain of the digital current Signal Regulation programmable gain amplifier group (1-3-1) that logic controller group (1-3-4) obtains according to data processor (1-3-3), programmable gain amplifier group (1-3-1) is sent to A/D converter group (1-3-2) after the analog voltage signal of reception is amplified according to its initial gain, A/D converter group (1-3-2) is sent to data processor (1-3-3) after input analog voltage signal is converted to digital voltage signal, the amplitude of the digital voltage signal that data processor (1-3-3) calculates according to input digital voltage signal, data processor (1-3-3) is sent to logic controller group (1-3-4) by the amplitude of the digital voltage signal calculating, the digital voltage signal that logic controller group (1-3-4) obtains according to data processor (1-3-3) regulates the gain of programmable gain amplifier group (1-3-1), electricity Ethernet Configuration interface (1-3-6) connection is sent to configuration manager (1-3-5) by configuration information, light pulse expanded circuit (3-5) is connected synchronization pulse is sent to logic controller group (1-3-4) with phototiming receiving interface (1-3-7) by optical fiber, logic controller group (1-3-4) is sent to configuration manager (1-3-5) by synchronization pulse, configuration manager (1-3-5) is sent to protocol groups frame module (1-3-8) by the configuration information receiving and synchronizing information, the data that protocol groups frame module (1-3-8) sends data acquisition unit group 1-3-3 according to the synchronizing information that receives are carried out framing according to IEC61850 agreement and by optical Ethernet, are received and dispatched interface (1-3-9) and be sent to standard merge cells (2), protocol groups frame module (1-3-8) requires to carry out framing according to the configuration information receiving according to IEC60044-8 and by optical fiber serial ports transmission interface (1-3-10), is sent to standard merge cells (2) with FT3 form.
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